Airworthiness Directives; Eurocopter France Model AS-365N2, AS 365 N3, EC 155B, EC155B1, SA-365N and N1, and SA-366G1 Helicopters
airworthiness · Rule · Final rule; request for comments. · Published 2004-08-19 · Effective 2004-09-03 · 69 FR 51358
Document
Document number
04-18438
Federal Register citation
69 FR 51358
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Publication date
2004-08-19
Effective date
2004-09-03
FAA docket
Docket No. FAA-2004-18850
Abstract
This amendment adopts a new airworthiness directive (AD) for the specified Eurocopter France (Eurocopter) helicopters. This action requires inspecting the main gearbox (MGB) baseplate for a crack and replacing the MGB if a crack is found in the MGB base plate. This amendment is prompted by the discovery of a crack in a MGB base plate. The actions specified in this AD are intended to detect a crack in a MGB base plate and prevent failure of one of the MGB attachment points to the frame, which could result in severe vibration and subsequent loss of control of the helicopter.